Periodic Trends

Which of the following best describes the periodic trend for atomic radius as you move across a period from left to right?

• Decreases

• Increases

• Remains constant

• Fluctuates

Which element would you predict to have the highest electronegativity?

• Sodium (Na)

• Chlorine (Cl)

• Aluminum (Al)

• Silicon (Si)

Tags

NGSS.HS-PS1-1

How does the atomic radius change as you move down a group in the periodic table?

• Increases

• Decreases

• Remains the same

• First decreases, then increases

What is the trend in metallic character as one moves from left to right across a period?

• Increases

• Decreases

• Remains constant

• First increases, then decreases

Which of the following elements has the highest ionization energy?

• Lithium (Li)

• Beryllium (Be)

• Boron (B)

• Carbon (C)

Tags

NGSS.HS-PS1-1

Which of the following is a property of metals in group 1 (alkali metals)?

• High electronegativity

• Low reactivity

• High density

• Low ionization energy

Tags

NGSS.HS-PS1-1

What is the primary factor that contributes to the increase in atomic radius as you move down a group?

• Increase in electron shielding

• Decrease in nuclear charge

• Increase in number of protons

• Decrease in electron energy levels

Which of the following elements is most likely to lose electrons in a chemical reaction?

• Fluorine (F)

• Oxygen (O)

• Sodium (Na)

• Nitrogen (N)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom has the greatest tendency to attract electrons?

• Hydrogen (H)

• Lithium (Li)

• Fluorine (F)

• Boron (B)

Tags

NGSS.HS-PS1-1

Which of the following statements about noble gases is true?

• They are highly reactive

• They have full outer electron shells

Tags

NGSS.HS-PS1-1